If you did all the settings and you cannot see the tags in the front-end listing. You need to check in the WPL > Activity Manager> Listing gallery in the "wpl_property_lisitngs_image" position to find if the tag is enable or not. Please refer to this KB article to find more: How to show/hide property tags

Also we have WPL tag add-on includes some more fearture. Please click on this link to find more about it .WPL Tag Add-on